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Author Question: The AP knee for an asthenic patient requires the central ray to be directed: perpendicular to the ... (Read 106 times)

washai

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on: Jul 17, 2018
The AP knee for an asthenic patient requires the central ray to be directed:
 
 perpendicular to the femorotibial joint
  10 degrees cephalic to the femorotibial joint
  3-5 degrees caudal to the femorotibial joint
  5 degrees cephalic to the femorotibial joint

Question 2

Pathological conditions which are affiliated with tissue atrophy are referred to as:
 
 destructive pathologies
  additive pathologies
  unknown pathologies
  defining pathologies


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yifu223

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Reply #1 on: Jul 17, 2018
Answer to Question 1

3-5 degrees caudal to the femorotibial joint

Rationale: The asthenic patient measures less than 18 cm from the ASIS to the tabletop which results in a very thin patient leg. In order for the CR to pass parallel to the tibial plateau, the tube is angled 3-5 degrees caudal.

Answer to Question 2

destructive pathologies

Rationale: Destructive pathologies are affiliated with tissue necrosis and/or atrophy. Imaging patients with these conditions without alteration of technical factors will result in excessive density on the image.


washai

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Reply 2 on: Jul 17, 2018
Great answer, keep it coming :)

kjohnson

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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